Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures

John Nichols; Xiang Gao; Shinbuhm Lee; Tricia L. Meyer; John W. Freeland; Valeria Lauter; Di Yi; Jian Liu; Daniel Haskel; Jonathan R. Petrie; Er Jia Guo; Andreas Herklotz; Dongkyu Lee; Thomas Z. Ward; Gyula Eres; Michael R. Fitzsimmons; Ho Nyung Lee

doi:10.1038/ncomms12721

Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures

John Nichols, Xiang Gao, Shinbuhm Lee, Tricia L. Meyer, John W. Freeland, Valeria Lauter, Di Yi, Jian Liu, Daniel Haskel, Jonathan R. Petrie, Er Jia Guo, Andreas Herklotz, Dongkyu Lee, Thomas Z. Ward, Gyula Eres, Michael R. Fitzsimmons, Ho Nyung Lee

Quantum Heterostructures

Research output: Contribution to journal › Article › peer-review

124 Scopus citations

Abstract

Strong Coulomb repulsion and spin-orbit coupling are known to give rise to exotic physical phenomena in transition metal oxides. Initial attempts to investigate systems, where both of these fundamental interactions are comparably strong, such as 3d and 5d complex oxide superlattices, have revealed properties that only slightly differ from the bulk ones of the constituent materials. Here we observe that the interfacial coupling between the 3d antiferromagnetic insulator SrMnO₃ and the 5d paramagnetic metal SrIrO₃ is enormously strong, yielding an anomalous Hall response as the result of charge transfer driven interfacial ferromagnetism. These findings show that low dimensional spin-orbit entangled 3d-5d interfaces provide an avenue to uncover technologically relevant physical phenomena unattainable in bulk materials.

Original language	English
Article number	12721
Journal	Nature Communications
Volume	7
DOIs	https://doi.org/10.1038/ncomms12721
State	Published - Sep 6 2016

Funding

This work was supported by the US Department of Energy (DOE), Office of Science (OS), Basic Energy Sciences (BES), Materials Sciences and Engineering Division (synthesis, physical property characterization, XAS, XMCD and PNR data analysis), and the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the US DOE (PNR data fitting). The research at ORNL's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, BES, US DOE (PNR). Use of the Advanced Photon Source, an Office of Science User Facility operated for the US DOE, OS by Argonne National Laboratory, was supported by the US DOE under contract no. DE-AC02-06CH11357 (XAS/XMCD). J.L. was sponsored by the Science Alliance Joint Directed Research and Development Program at the University of Tennessee.

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Nichols, J., Gao, X., Lee, S., Meyer, T. L., Freeland, J. W., Lauter, V., Yi, D., Liu, J., Haskel, D., Petrie, J. R., Guo, E. J., Herklotz, A., Lee, D., Ward, T. Z., Eres, G., Fitzsimmons, M. R., & Lee, H. N. (2016). Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures. Nature Communications, 7, Article 12721. https://doi.org/10.1038/ncomms12721

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abstract = "Strong Coulomb repulsion and spin-orbit coupling are known to give rise to exotic physical phenomena in transition metal oxides. Initial attempts to investigate systems, where both of these fundamental interactions are comparably strong, such as 3d and 5d complex oxide superlattices, have revealed properties that only slightly differ from the bulk ones of the constituent materials. Here we observe that the interfacial coupling between the 3d antiferromagnetic insulator SrMnO3 and the 5d paramagnetic metal SrIrO3 is enormously strong, yielding an anomalous Hall response as the result of charge transfer driven interfacial ferromagnetism. These findings show that low dimensional spin-orbit entangled 3d-5d interfaces provide an avenue to uncover technologically relevant physical phenomena unattainable in bulk materials.",

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AU - Freeland, John W.

AU - Lauter, Valeria

AU - Yi, Di

AU - Liu, Jian

AU - Haskel, Daniel

AU - Petrie, Jonathan R.

AU - Guo, Er Jia

AU - Herklotz, Andreas

AU - Lee, Dongkyu

AU - Ward, Thomas Z.

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AU - Fitzsimmons, Michael R.

AU - Lee, Ho Nyung

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Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures

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